Just a month ago they were calling each other “wifey”, but it seems former BFFs Rita Ora and Cara Delevingne are divorcing.

We can reveal that the close pals fell out after their car-crash performance at a DKNY fashion party a month ago, which saw Cara snatch the mic and wail into it, clumsily dance around, steal Rita’s cap and grind the star from behind. Cringe.

The pair, who used to be inseparable, haven’t been seen together since that evening.

Even more worryingly, they’ve stopped messaging each other on Twitter and Instagram – where they used to declare their love for each other every day.

Cara failed to show up for Rita’s big gig at the weekend when she sang with Snoop Dogg and supported Jay-Z at the Wireless Festival at the Olympic Park in East London.

(Image: WireImage)

Instead, the supermodel, 20, hired a yacht with Rita’s enemy Rihanna, 25, in Monte Carlo, where they hung out in skimpy bikinis. Touche.

At Glastonbury a fortnight ago Rita and Cara were staying just metres away from each other in VIP Winnebagos but partied separately all weekend.

An insider tells 3am: “There’s a lot of hurt on both sides but Rita’s been working towards her singing career and carefully crafting her image for four years and it was all in danger of being a joke after that shabby performance. Rita’s been advised to distance herself from the model.”

(Image: WENN)

The singer, who’s dating DJ Calvin Harris, even admits her real mates are the ones she went to school with.

Speaking in this month’s GQ she says: “To me, I have my friends who I’ve known my whole life, and I can count them on one hand. They’re people I went to school with. Everyone else I meet from that point on, if they happen to become a friend, that’s incredible – come and join the family – but if not…”

3am contacted both Rita’s and Cara’s people about this but got no response.

Meanwhile, Cara’s gearing up for a massive 21st birthday bash in Ibiza next month but it remains to be seen whether ?Caz and Rita will have kissed ?and made up by then.